On the surface, Canada's passports look pretty boring. There just booklets of government paper that Canadians need to travel to foreign countries. But, there's more to Canada's passports than meets the eye.
Sure, the pages have simple illustrations on them, but they're mostly just beige pages sitting inside a simple blue book with "Canada" and "Passport Passeport" written on the front.
This photo shows a basic page from a Canadian passport.
But, those plain beige pages are hiding something really cool. Just stick the passport under a black light to find out what it is.
Once you put the passport under a black light, the images come alive with all sorts of hidden features. Canada uses four-color invisible fluorescent ink to make it possible. It's not just for looks, though. The ink has a practical purpose, too.
"The artistic designs in ultraviolet (UV)-reactive inks complement the visual design and serve to further secure the visa pages against counterfeiting," Citizenship and Immigration Canada spokesperson Nancy Caron told Mashable. "The presence of UV designs were included in the details of security features shared with Canadian and international law enforcement and border authorities for their use in establishing the authenticity of a Canadian electronic passport."
This is what the passport looks like underneath the black light. Those faint maple leaves in the background explode with color and are surrounded by other hidden images.
Canada didn't stop with the maple leaf designs, either. The passport book is full of lots of other pages and plenty of different designs like Parliament Hill, Niagara Falls and the Fathers of Confederation.